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In this chapter , we will study the relationship among the quantity of work given , wages given to them stipulated time , number of persons , etc , and after it , we will be able to complete the work in stipulated time by arranging some persons according to the work but before it , we should have known some basic rules.

Did you ever wondered how a shopkeeper is going to maintain his orders?or how a lady is going to organise her monthly budget?they all here and there use concepts of profit and loss , either knowingly or unknowingly,So lets dive into these,

Did you ever wonder how fast you run?I never did!But , seriously the way the speeds and distances work , can play a much vital role in daily life,suppose you depart from a station and you know the speed of the bus you are in and want to calculate if with the present speed , will you be able to get to your destination in time....So, lets see some of these concepts,

How much is my bank going to pay me for depositing a certain amount of money into my bank account?Has this question came into your mind ? If yes, then you are going to master all ways how you can calculate this in this blog post on SI and CI.
SIMPLE INTEREST :
When we borrow some money , then customarily the money lender or the person who is giving us the money uses to charge some extra amount of money in lieu of the money that he has lent us.This extra money by the money lender is called Interest.

Formulas you need to remember :
1. when you want to calculate the least number which when gets divided by numbers namely x,yand z and leaves remainders as a,b and c respectively, then the number can be calculated as ,

number = [LCM of (x,y,z)-p], where p=(x-a)=(y-b)=(z-c)

2.when you want to calculate the least number which when divided by x,y and z leaves the same remainder in each case , then the number will be,

number =[LCM of (x,y,z)+R], where R is the remainder left in each case